How I can test evap bypass solenoid valve on Honda civic2002?

How I can test evap bypass solenoid valve on Honda civic2002? - 1

Take it off and jumper it directly to the battery…

With a bi-directional scan tool and smoke machine.
Go find a good mechanic.

Most of the time, the solenoid either does not open or leaks when it is supposed to be closed. I usually check these by applying power to the solenoid to see if it is opening and closing properly (without leaking). Some people use a vacuum pump with gauge and others just blow through the solenoid to make sure it is working and not leaking. If your solenoid seems to be working, the issue probably lies elsewhere. That's where the smoke machine and scan tool comes in.